This is a review of Seattle Sports basic bilge pump and not the super deluxe model. I paid twenty-five dollars for mine but I have seen them on line for twenty. I didn't want to spend a lot of money on a bilge pump because it's something one doesn't plan to use very much. At twenty-one inches long it is compact enough to go under my deck bungees without getting in the way. The most important thing about any bilge pump is how well it moves water and how reliably it does it. I tested mine in pool water soon after I purchased it after a roll practice session. It pumped most of the water out of the cockpit in a few minutes. The water that was left was just to shallow foe the pump to get, maybe a cup, if that.
I have read about some pumps becoming jammed when used in salt water with sand in it. I got to test mine in such conditions in a real life situation. I got dumped out while surfing for the first time( it can happen to anyone). After righting my kayak and a cowboy scramble back in the cockpit, I got to the task of pumping out the water. Being the coast of South Carolina, there was a fair amount of sediment and sand in the water. The Seattle Sports pump worked like a champ. It moved the water fast enough to empty the cockpit before the next wave hit.
See my YouTube video of this including the pump in action at https://youtu.be/bk8gkgEEsz8